Arm

The usual form is zeroa` from the root zara`, "to spread." The arm may be "stretched out." 'Ezroa` is this form with prosthetic 'aleph (Job 31:22; Jeremiah 32:21), and dera` is the Aramaic form. Chotsen is really "bosom," thus the Revised Version (British and American) (Isaiah 49:22); and katheph is "shoulder," thus the Revised Version (British and American) (Job 31:22). Compare cheir, also, in
Acts 11:21.

Figurative:

The arm denotes influence, power, means of support or conquest. The arms of Moab (Jeremiah 48:25) and of Pharaoh (Ezekiel 30:21) are broken. The arm of Eli and the arm of his father's house are to be cut off (1 Samuel 2:31). Because the arm wielded the sword it signified "oppression" (Job 35:9). The arms are the means of support, therefore to refuse to aid the fatherless is to break their arms (Job 22:9).

Applied anthropomorphically to God, the arm denotes also His power, power to deliver, support, conquer. His "outstretched arm" delivered Israel from Egypt (Exodus 6:6; Deuteronomy 4:34, etc.). They support: